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Pysical Science Ch 9

Chapter 9 Notes

QuestionAnswer
Thermal Energy the sum of all kinetic energies of an object's particles
Internal Energy the sum of the PE and the KE
Heating or Cooling Transferring particle kinetic energy
Temperature of an object directly related to the average kinetic energy
Converting Celsius to Fahrenheit F=9/5C+32
Converting Fahrenheit to Celsius C=5/9(F-32)
Thermal expansion Particles gain energy and can move away from each other more resulting in the object to get bigger or gain volume
Electrical resistance a way to measure how well electricity is conducted
Viscosity the measure of resistance of liquids to flow
Heat the quantity of thermal energy that flows from one place to another
Conduction when two objects of different temperatures touch, thermal energy moves from the hotter one to the cooler one
thermal equilibrium when the objects have the same kinetic energy and temperature
Convection thermal energy carried from one location to another by liquid
convection current colder fluids sink; warm fluids rise
Radiation thermal energy that radiates from the source outward
vacuum large amount of empty space
insulators materials that resist the flow of thermal energy
heat capacity the relationship between the amount of thermal energy absorbed and the temperature change caused by this
specific heat the heat capacity per gram of material
latent heat of fusion the amount of thermal energy exchanged per gram of material during melting or freezing
latent heat of vaporization the amount if heat it takes to change the liquid to a gas
Created by: abbyblack
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